@Test
public void testGetDurationWithUnit() throws Exception {
testStopwatch.start();
Thread.sleep(10);
testStopwatch.stop();
assertTrue(testStopwatch.getDuration() > 12);
}
@Test
public void testReset() throws Exception {
testStopwatch.start();
Thread.sleep(10);
testStopwatch.stop();
assertTrue(testStopwatch.getDuration() > 0);
testStopwatch.reset();
assertTrue(testStopwatch.getDuration() == 0);
}